package com.yskj.tms.wxutil;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;

public   class MatrixToImageWriter {
	private static final int BLACK = -16777216;
	private static final int WHITE = -1;

	public static BufferedImage toBufferedImage(BitMatrix matrix) {
		int width = matrix.getWidth();
		int height = matrix.getHeight();
		BufferedImage image = new BufferedImage(width, height, 1);
		for (int x = 0; x < width; ++x) {
			for (int y = 0; y < height; ++y) {
				image.setRGB(x, y, (matrix.get(x, y)) ? -16777216 : -1);
			}
		}
		return image;
	}

	public static void writeToFile(BitMatrix matrix, String format, File file)
			throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, file))
			throw new IOException("Could not write an image of format "
					+ format + " to " + file);
	}

	public static void writeToStream(BitMatrix matrix, String format,
			OutputStream stream) throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		if (!ImageIO.write(image, format, stream))
			throw new IOException("Could not write an image of format "
					+ format);
	}

	public static void main(String[] args) throws Exception {
		String text = "weixin://wxpay/bizpayurl?pr=nSBfXx6";
		int width = 300;
		int height = 300;
		String format = "png";
		Hashtable  hints = new Hashtable();
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		BitMatrix bitMatrix = new MultiFormatWriter().encode(text,
				BarcodeFormat.QR_CODE, width, height, hints);
		File outputFile = new File("F:/1.png");
		MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
	}
}